Drilling apparatus



F. H. MUELLER ETAL Nov. 16, 1943.

DRILLING APPARATUS Original Filed July 17. 1940 Patented Nov. 16, 1943DRILIQING APPARATUS vFrank H. Mueller fand ,Walterj Bowan, Decatur,Y

Ill., assignors to'Mueller Co2,l Decatur; Il1.,a corn porationrofflllinos ,original application July 17,1940, serial No. l 346,052.Divided and this application December 12,1941, Serial No. 422,774

9 cnims.Y (oma-4o) This 4invention relates to drilling machines ofthetype adaptedY to operate on mains containing pressure fluid. Machinesof this kind comprise a barrel adapted to be securedv at one end againstthe Vmain, the barrel having an internal seat intermediatel its endsfaced toward the main and with which is cooperable a liop valveso thatthe inner and outerA portions of the chamber can be isolated from eachother when necessary. The

iiop valve ordinarily includes an extension xed on an operating shaftwhose axislies somewhat above and outwardly' of the seat,v rocking ofthe shaft enabling the valve proper to be moved between a positionwherein it hangs substantially longitudinally of the barrel at one sideof the seat and a position wherein it engages the seat.

vIn order to accommodate this swing the barrel has to have a substantialclearance below the seat. y l

These machines freqently have to be` usedin very cramped quarters andanything that can beA done to decrease the barrel height adds to their vusefulness. The present invention has as its principal object to somount the iiop Valve as to enable the necessary clearance below the seatto be materially reduced and an at presentpreferred manner ofaccomplishing this result is illustrated in the accompanying drawing inwhich;

Figure l is an axial section of .thelower-portion of a machine equippedin accordance with the invention, the machine being shown in op-Referring to the drawing, the barrel, generallyk designated bythereference numeral I 0, Figure 1',

has an inner or lower portion II and an upper or outer portion I2, thetwo portions beingLthreaded together at I3. The lower barrel portion IIis supported on the main I4 through'the intermediary of sealing gasketsI5 and rI6 and a.

saddle I1 and is securedlin position by means of a chain or othersuitable means I8 `which `is' passed under the main and has its endsanchoredl `to the barrel. Barrel portion I2 has a cap .I9

threaded thereon, this cap having ,arbore-Nin.;

which is rotatableandreclprocable the boring As here shown, the barrelportionI I' has a cylindricalthro'at 2| yvvhich' terminates downwardlyin ashoulder 22 constituting a valve seat. The barrellportion Ilincludes at one side an enlargement23 constituted in part` by aremovable cover plate 24 and this enlargement, as here shown, extendsfrom below seat 22 nearly to the upper endof'the barrel. The throatjZIis constituted in part by aY cylindricalweb 25 constituting a boundaryof *the chamber portionl26 which ex-r tends to both sides of the webportion 25.

Journaled in the enlargement 23 above seat 22 is a rock shaft 21 havinga projecting end to which is secured an'operating handle 28. On asquared portion of shaft 211s an arm 29 to the free en d of which ispivoted on a pin 30 the short a1-`m13I of a substantially L-shaped(inside elevation) member or carrier 32 whose long arm 33 has at itsfree end a substantially cylindrically hollow'ed seat 34 on which isseated the mating bossportion of a valve disc 35, the latterhavingathreaded stem 36 passing, with some clearance, through an openingin theseat 34 andbeing provided `at` itsextremity with a non-binding retainingnut 31. This mounting gives the disc a limited range of universalrockability relative tothe carrier. "The valve disc 35 includes anannular gasket38 adapted to engage the seat 22 as shown in FigureV 1 Thediameter of the disc is` greater than the spacing of the inner end ofenlargement 26 from the adjacent edge of seat 22 so that the disc couldnot be passed facewise through this space. f

Formed on` the web 25 areopposite protuberances 39V and 40, Figures 2and A3, which are provided with oppositely faced coaxial bores receivingpivot pins as at 39',` Figure la, carried by the ends Aof arcuatelinks4I and-42, the pins being insertable, in assembly, through openings inthe barrel walls, theseV openings being subsequently sealed by plugsA43- and 44, Figure 2. The axis of the'pivot-pins is parallel to the'axis of shaft 21 and is disposed towardthe latter away from the sions45 and `Miat its free end and toI these are pivotedthelowerends of links4I and 152 on a common axis parallel to their upperaxis.`

InKFigure 1a the valve member 35 `is'substantially completely within thechamber 26 and arm 29is in an upwardly extending collapsed relationwith-'the portion 3| of carrier 32. VIf shaft 2.1 isturned in aclockwise direction the valve disc' moves with thecarrier 32. as guidedby the considerably as compared to that heretofore necessary toaccommodate the swingof the usual flop valve as described at the outset.

It will be evident that variations in the form' and arrangement of partsfrom the disclosure herein are possible without departure from theinvention as defined in the claims.

The application is a division of our application Serial No. 346,052,filed July 17, 1940, now Patent No. 2,291,979, issued August 4, 1942.

We claim:

' 1. In a drilling machine, abarrel portion adapted t0 have one Lendsealedagainst a main, an`

annular shoulder in 'said barrel portion faced inwardly toward andspaced from said end and constituting a valve seat, said barrel portionhav- .ing a lateral enlargement defining a chamber portion .which'extends outwardly beyond said seat, a valve disc; and means in saidbarrel portion arranged to guide said disc inwardly from a position insaid chamber, across said seat, and then outwardly against said seat;said means including an operating shaft in said chamber portion, an armfixed on said shaft, and a member pivoted `to said arm and engagingvsaiddisc.

2. Ina drilling machine, a barrel portion adapted to have one end sealedagainst a` main, an annular shoulder in said barrel portion facedinwardly toward and spaced` from said end and constituting a valve seat,said barrel portion having a lateral enlargement defining a chamberportion which extends outwardly beyond said seat, a valve disc; andmeans including links pivoted on said barrel portion andk in `connectionwith said disc and arranged to guide the disc inwardly from a positionin said chamber, across said seat, and then outwardly against said seat;saidr means also .including an operating shaft in saidchamber portion,an arm fixed on said shaft, and a memberpivoted to said arm and engagingsaid disc.

3. In a drilling machine, a, barrel portionv adapted to have one endsealed against amain, an annular shoulder in said barrel portion facedinwardly toward and spaced fromsaid'end'and constituting a valve seat,said barrel portion having` a 'lateral enlargement defining a chamberportion whichV extends outwardly beyond said seat, a valve disc, acarrier rfor said disc, links pivoted at onev end on said barrel portionon an axis'outwardly of said seat and spaced from' the axis of thelatter toward said VVVchamber lportion and at their other end on saidcarrienfand means in connection with saidV carrier andcoroperating withsaid links to move `said disc 4inwardly from a position in` said chamberportion,l across said seat, and then outwardly against said. seat.

4. In a drilling machine, a barrel portion adapted to haveone end sealedagainst a main, an annular shoulderin said barrel portion faced inwardlytoward and spaced from said end and constituting a valve seat,rsaidbarrel portion having a lateral enlargement defining a chamber portionwhich extends outwardly beyond vsaid seat,

a valve disc, a carrier for said disc; and means including links pivotedat one end on said barrel portion on an axis outwardly of said seat andspaced from the axis of the latter toward said chamber portion and attheir other end on said carrier to guide said discinwardly fromaposition in said lchamber portion, across said seat, and then outwardlyagainst said seat; said means also including an operating shaft in saidchamber portion rockable on an axis parallel to said link axis, and anarm fixed on said shaft and pivoted to said carrier, rocking of saidshaft serving to move said d isc between said positions.

5. In a drilling machine, a barrel portion adapted to have one endsealed against a main. an annular shoulder in said barrel portion facedinwardlyk toward and spaced from said end and constituting a valve seat,said barrel portion having a lateral enlargement defining a chamberportion .which extends outwardly beyondsaid seat,a` valve disc, a'carrier for said disc, means supporting said disc on the'` carrierforlimited rocking relative to the latter, links pivoted at one end on'saidbarrel portion on an axis outwardly of said seat and spaced from theaxis of the latter toward said chamber portion and attheir other end onsaid carrier, and means in connection with said carrier and cooperatingwith said rlinks to move said disc inwardly from a position in saidchamber portion, across said seat, and then outwardlyagainst said seat;

6. In a drilling machine, a barrel portion adapted to have one endsecured against a main, an annular shoulder in said barrel portion facedinwardly toward and spaced from said end and constituting a valve seat,said barrel portion having a lateralenlargement defining a chamber por-Ytion which extends outwardly'beyond said seat, a'

valve disc, links pivoted at one end on said barrel portion von Aan axisoutwardly'of said seat and betweenopposite sides of said seat and inpivotal connection at 4the other end with said disc, and operating meanscooperating with said links to move said disc substantially sidewisefrom a gen.- erally"1ongitudinally' extending position in said chamberportion -in a substantially arcuate path to atransverse position inwhich it engages said seat.

.7J In a drilling machine, a barrel portion adapted to have one endsealed against a main, an annular shoulder in said` barrel portionfacedinwardly toward and spaced from said end and constituting a valve seat,`said barrel portion having a lateral enlargement whose inner end isinwardly ofsaid seat, said enlargement defining a chamber portion whichextends outwardly beyond said seat, a valve disc, the spacing of saidinner end of said enlargement from the adjacent end of said seat beingless than the diameter of said disc; and means in said barrel portionarranged to guide said disc from a generally longitudinally extendingposition in said chamber portion substantially side-wise inwardlythrough the space` existing between the inner end of said enlargementand the adjacentr edge of said'A seat, across said seat, and kthenoutwardly against said seat; said means including apart operable fromthe exterior of said barrel portion. v

`8. In a drilling machine, a barrel portion adaptedto have oneend sealedagainst a main, an annularshoulder in said barrel portion faced inwardlytoward and spaced from said end and constituting a valve'seat, saidbarrel portion having a lateral enlargement whose inner end is inwardlyof said seat, said enlargement defining a chamber portion which extendsoutwardly beyond said seat, a valve. disc, the spacing of said inner lend of said enlargement from the adjacent edge of said seat being lessthan the diameter of said disc; and means including links pivoted onsaid barrel portion and in connection with said disc and arranged toguide the disc from a generally longitudinally extending position insaid chamber Vportion Vsubstantially side-wise inwardly through thespace existing between the inner end of said enlargement and theadjacent edge of said seat,

barrel portion having a lateral enlargement whose inner end is inwardlyof said seat, said enlargement defining a chamber portion which extendsoutwardlybeyond said seat, a valve disc, the

spacing of said inner end of said enlargement from the adjacent edge ofsaid seat being'less than the diameter of said disc, and means in saidbarrel portion for guiding said disc substantially side-wise from agenerally longitudinally extending position in said chamber portion in asubstantially arcuate path through the space existing between the innerend of said enlargement and p the adjacent edge of said seatto atransverse position in which it engages saidl seat; said means includinga part operable from the exterior of said barrel portion. u

FRANK H. MUELLER.. WALTER J.` BOWAN.

